TONER
Provided is a toner whereby stable image densities are obtained throughout long-term use regardless of the use environment and, simultaneously therewith, the occurrence of cleaning failures can be inhibited. The toner comprises fine silica particles and toner particles comprising a binder resin and...
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Main Authors | , , , , , |
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Format | Patent |
Language | English French Japanese |
Published |
03.01.2014
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Subjects | |
Online Access | Get full text |
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Abstract | Provided is a toner whereby stable image densities are obtained throughout long-term use regardless of the use environment and, simultaneously therewith, the occurrence of cleaning failures can be inhibited. The toner comprises fine silica particles and toner particles comprising a binder resin and a colorant, and is characterized in that the average roundness of the toner is 0.950 or higher, the static friction coefficient of the toner against a polycarbonate resin substrate is 0.100-0.200, and the coverage (X1) of the toner surface with the fine silica particles, as determined with an X-ray photoelectron spectrometer (ESCA), is 50.0-75.0% by area.
La présente invention concerne un toner par lequel des densités d'images stables sont obtenues tout au long d'une utilisation à long terme quel que soit l'environnement d'utilisation et, simultanément avec cela, l'occurrence de défaillances de nettoyage peut être empêchée. Le toner comprend de fines particules de silice et des particules de toner comprenant une résine liante et un colorant, et est caractérisé en ce que l'arrondi moyen du toner est supérieur ou égal à 0,950, le coefficient de frottement statique du toner contre un substrat de résine polycarbonate est de 0,100 à 0,200, et la couverture (X1) de la surface de toner avec les fines particules de silice, déterminée par un spectromètre photoélectronique à rayons X (ESCA), est de 50,0 à 75,0 % par aire. |
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AbstractList | Provided is a toner whereby stable image densities are obtained throughout long-term use regardless of the use environment and, simultaneously therewith, the occurrence of cleaning failures can be inhibited. The toner comprises fine silica particles and toner particles comprising a binder resin and a colorant, and is characterized in that the average roundness of the toner is 0.950 or higher, the static friction coefficient of the toner against a polycarbonate resin substrate is 0.100-0.200, and the coverage (X1) of the toner surface with the fine silica particles, as determined with an X-ray photoelectron spectrometer (ESCA), is 50.0-75.0% by area.
La présente invention concerne un toner par lequel des densités d'images stables sont obtenues tout au long d'une utilisation à long terme quel que soit l'environnement d'utilisation et, simultanément avec cela, l'occurrence de défaillances de nettoyage peut être empêchée. Le toner comprend de fines particules de silice et des particules de toner comprenant une résine liante et un colorant, et est caractérisé en ce que l'arrondi moyen du toner est supérieur ou égal à 0,950, le coefficient de frottement statique du toner contre un substrat de résine polycarbonate est de 0,100 à 0,200, et la couverture (X1) de la surface de toner avec les fines particules de silice, déterminée par un spectromètre photoélectronique à rayons X (ESCA), est de 50,0 à 75,0 % par aire. |
Author | NOMURA SHOTARO OHMORI ATSUHIKO MATSUI TAKASHI HASEGAWA YUSUKE HIROKO SHUICHI SUZUMURA YOSHITAKA |
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Snippet | Provided is a toner whereby stable image densities are obtained throughout long-term use regardless of the use environment and, simultaneously therewith, the... |
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SubjectTerms | CINEMATOGRAPHY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY MAGNETOGRAPHY PHOTOGRAPHY PHYSICS |
Title | TONER |
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